The twitter account handle of the organization, starting with the '@' symbol. E.g.: @RAP_Asso. This is necessary in order to attribute the 'Twitter Card' to the correct account. See https://developer.twitter.com/en/docs/tweets/optimize-with-cards/overview/summary
This is a gradient color. If selected, the background color will be a gradient color. If not, the background color will be a monochrome background color.
This is the description of the petition, it will be displayed in Twitter/Facebook cards when the link is posted to social networks. To be tested via https://cards-dev.twitter.com/validator and https://developers.facebook.com/tools/debug/